APA-Zitierstil (7. Ausg.)

Urban, E. K., & Poole, J. (1987). Ethiopia's endemic birds. Ethiopian Tourism Commission.

Chicago-Zitierstil (17. Ausg.)

Urban, Emil K., und Jill Poole. Ethiopia's Endemic Birds. Addis Ababa: Ethiopian Tourism Commission, 1987.

MLA-Zitierstil (9. Ausg.)

Urban, Emil K., und Jill Poole. Ethiopia's Endemic Birds. Ethiopian Tourism Commission, 1987.